Raspberry Pi Model A+

256 MB RAM, 1 USB-Port

The Raspberry Pi (short: RPi or RasPi) is an ultra-low-cost miniature computer board
which was conceived with the primary goal of teaching computer programming to children.
It's also a capable little PC which can be used for many of the things that your desktop PC does,
like spreadsheets and word-processing, it even plays high-definition video.
Or you can use it as a small server for applications like
mpd
or
ownCloud.
Or as a gaming or emulation system (for example built into a C64 case with the
Keyrah interface).
Or something entirely different, it's up to you. :-)